Philips Semiconductors
Product specification
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
MGG264
18
handbook, full pagewidth
12
dB
PFUV3 to PFUV0
0001
0010
0011
1111
1010
1110
6
0
−6
−12
−18
−24
−30
−36
−42
0
0.1
0.2
0.3
0.4
0.5
MHz
Fig.20 Chrominance Prefilter: frequency response for miscellaneous register settings.
Table 57 Horizontal prescaling and normalization
BCS
DCGX (CONTR. | SAT.)
= X/Y × 64
HORIZONTAL
PRESCALER
COEFFICIENT
SEQUENCE (EXAMPLE)
CXY (LUMINANCE) WEIGHT
XPSC
CXUV (CHROMA)
SUM
1
0
1
1-1
1-1-1
0 0
0 0
0 2
0 0
0 0
0 6
0 0
0 2
0 4
0 0
0 8
0 0
0 0
1 E
2
3
1
1
2
2
2
3
2
3
3
3
3
3
3
7
1
1
2
⁄
⁄
3
2
1-2-1
4
1
1
1
⁄
2
3
1-1-1-1
4
3
1
⁄
4
1-1-1-1-1
1-2-2-2-1
111 111
5
⁄
5
4
8
1
1
⁄
4
4
5
6
⁄
6
5
121 121
112 211
111 1 111
111 2 111
1111 1111
1111 1 1111
1222 2 2221
8
1
1
8
1
⁄
8
7
⁄
7
6
8
1
1
1
⁄
6
7
8
7
1
⁄
8
9
⁄
9
8
16
1
1998 Apr 09
71
NXP [ NXP ]
